the Darius Ball Pen is Made From Recycled Aluminium Metal, Which Requires Less Energy Than Producing Aluminium Metal From Raw Materials. It Also Reduces the Amount of Waste in Landfills & Helps to Conserve Natural Resources Aiming to Reduce Greenhouse Emissions. the Push Button & the Bottom Part of the Barrel is Made of Bamboo. Ink Colour: Black. Writing Length: 800 Metres. Nib Size: 1.00 Mm. Minimum Quantities Apply.